2121020000201 has 2 divisors, whose sum is σ = 2121020000202. Its totient is φ = 2121020000200.

The previous prime is 2121020000173. The next prime is 2121020000251. The reversal of 2121020000201 is 1020000201212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1860225937801 + 260794062400 = 1363901^2 + 510680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121020000201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121020000251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060510000100 + 1060510000101.

It is an arithmetic number, because the mean of its divisors is an integer number (1060510000101).

Almost surely, 2^{2121020000201} is an apocalyptic number.

It is an amenable number.

2121020000201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121020000201 is an equidigital number, since it uses as much as digits as its factorization.

2121020000201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2121020000201 its reverse (1020000201212), we get a palindrome (3141020201413).

It can be divided in two parts, 212 and 1020000201, that multiplied together give a palindrome (216240042612).

The spelling of 2121020000201 in words is "two trillion, one hundred twenty-one billion, twenty million, two hundred one", and thus it is an aban number.